Loop trolley, loop system and strip steel deviation rectifying method

Abstract

The invention discloses a loop trolley, a loop system and a strip steel deviation rectifying method. The technical problem that strip steel in a loop trolley in the prior art is prone to deviation is solved. The loop trolley comprises a loop trolley body, a steering roller, a deviation rectifying device, a detecting device and a control device, and the steering roller is arranged on the loop trolley body and used for steering strip steel conveyed to the loop trolley; the deviation rectifying device is arranged on the loop vehicle body and located on the upstream of the steering roller in the moving direction of the strip steel so as to rectify deviation of the strip steel entering the loop vehicle body; the detection device is arranged on the loop vehicle body and located on the upstream of the deviation rectifying device in the moving direction of the strip steel; and the control device is connected with the detection device and the deviation rectifying device. In the moving process of the strip steel, the condition that the strip steel deviates from a normal track possibly exists when the strip steel moves to the position near the steering roller, whether the strip steel deviates from the moving track or not can be obtained through the detection device in advance, accordingly, deviation correction is conducted in time through the deviation correction device correspondingly, and the moving stability of the strip steel is guaranteed.

Description

Technical Field

[0001] This application belongs to the technical field of loop cars, and particularly relates to a loop car, a loop system, and a strip steel deviation correction method. Background Art

[0002] The function of the loop is to buffer the speed difference between the inlet and outlet sections and the process section of the production line, and is used to store strip steel. The loop volume is controlled by the position of the loop car. Due to the thick incoming strip steel and large storage requirements, horizontal loops are generally used in cold rolling and pickling lines. The so-called horizontal loop has a horizontal structure. Under the action of the moving loop car and the ground-fixed turning rollers, the strip steel is arranged horizontally and in multiple layers. Among them, the loop car is dragged by a hoisting motor through a steel wire rope to keep a certain tension on the horizontal strip steel in the loop. At the same time, swingable idlers are arranged at fixed intervals, which act together with the tension to prevent the strip steel from sagging excessively.

[0003] When releasing the loop, the strip steel exits the loop. Each time the car reaches a row of idlers, the idlers can swing horizontally and open to ensure the passage of the car; when filling the loop, the strip steel is stored in the loop. Each time the car reaches a row of idlers, the idlers swing horizontally and close to support each layer of strip steel. Due to the large length of the loop, high strip steel speed, as well as the action of numerous evenly distributed idlers in the middle of the loop and poor strip steel shape, etc., the deviation problem often occurs. In severe cases, the strip steel deviates from the roll surface, resulting in the forced interruption of production. Summary of the Invention

[0004] To solve the technical problem that the strip steel in the current loop car is prone to deviation, this application provides a loop car, a loop system, and a strip steel deviation correction method.

[0005] In the first aspect of this application, a loop car is provided, including:

[0006] A loop car body;

[0007] A turning roller, provided on the loop car body, for turning the strip steel conveyed to the loop car;

[0008] A deviation correction device, provided on the loop car body, along the direction of movement of the strip steel, the deviation correction device is located upstream of the turning roller to correct the deviation of the strip steel entering the loop car body;

[0009] A detection device, provided on the loop car body, along the direction of movement of the strip steel, the detection device is located upstream of the deviation correction device;

[0010] A control device, connected to both the detection device and the deviation correction device.

[0011] In some embodiments, the number of the turning rollers is N, the number of the deviation correction devices is N, and the number of the detection devices is N, where N is a natural number and N≥1;

[0012] The strip steel is conveyed to the loop car for storage or release, so as to form the first layer of strip steel, the second layer of strip steel... and the 2Nth layer of strip steel.

[0013] In some embodiments, the deviation rectifying device includes:

[0014] A sliding platform,

[0015] A deviation rectifying roller, one end of which is rotatably connected to the loop car body through a bearing seat, and the other end is arranged on the sliding platform;

[0016] A driving member, arranged on the loop car body, and the output end of the driving member acts on the other end of the deviation rectifying roller to drive the deviation rectifying roller to move along the sliding platform so as to rectify the strip steel.

[0017] In some embodiments, the deviation rectifying roller is slidably connected to the sliding platform;

[0018] And / or, the axial length of the deviation rectifying roller is greater than the moving distance of the deviation rectifying roller.

[0019] In the second aspect of the present application, a loop system is provided, including:

[0020] The above-mentioned loop car;

[0021] A conveying device for conveying strip steel to the loop car body for storage or release.

[0022] In some embodiments, the loop system further includes a supporting roller device arranged between the turning roller and the conveying device.

[0023] In the third aspect of the present application, a strip steel deviation rectifying method based on the above-mentioned loop system is provided, including the following steps:

[0024] Obtaining the strip steel center deviation amount of the strip steel based on the detection device;

[0025] Controlling the deviation rectifying device to start based on the strip steel center deviation amount of the strip steel so as to rectify the strip steel.

[0026] In some embodiments, obtaining the strip steel center deviation amount of the strip steel based on the detection unit specifically includes: recording the distance from the strip steel edge at the driving end of the deviation rectifying device to the initial strip steel center line of the deviation rectifying device as A, and recording the distance from the strip steel edge on the other side to the strip steel initial center line as B, then the strip steel center deviation amount C=(A - B) / 2.

[0027] In some embodiments, controlling the deviation rectifying device to start based on the strip steel center deviation amount of the strip steel specifically includes:

[0028] If the center offset of the strip steel is greater than the first threshold, control the driving member of the control deviation correction device to move in the direction of the movement of the strip steel to correct the deviation of the strip steel.

[0029] If the center offset of the strip steel is less than the first threshold, control the driving member of the control deviation correction device to move in the opposite direction of the movement of the strip steel to correct the deviation of the strip steel.

[0030] In some embodiments, the strip steel deviation correction method of the loop system further includes:

[0031] Obtain the strip steel width dimension, the center offset of the strip steel, and the risk degree of the strip steel edge exceeding the roller edge.

[0032] If the risk degree of the strip steel edge exceeding the roller edge is greater than the second threshold and less than or equal to the third threshold, control the loop car body to decelerate.

[0033] If the risk degree of the strip steel edge exceeding the roller edge is greater than the third threshold, control the loop car body to stop.

[0034] According to a loop car, a loop system, and a strip steel deviation correction method provided by one or more embodiments of the present application, the loop car includes a loop car body, a steering roller, a deviation correction device, a detection device, and a control device. The steering roller is arranged on the loop car body and is used to steer the strip steel conveyed to the loop car. The deviation correction device is arranged on the loop car body. Along the direction of the movement of the strip steel, the deviation correction device is located upstream of the steering roller to correct the deviation of the strip steel entering the loop car body. The detection device is arranged on the loop car body. Along the direction of the movement of the strip steel, the detection device is located upstream of the deviation correction device. The control device is connected to both the detection device and the deviation correction device. During the movement of the strip steel, when the strip steel moves near the steering roller, there may be a situation where the strip steel deviates from the normal trajectory. The detection device can be used to obtain in advance whether the strip steel deviates from the movement trajectory, and then the deviation correction device can be used to correct the deviation in a timely manner to ensure the stability of the movement of the strip steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Shows a schematic structural diagram of a loop system in one or more embodiments of the present application.

[0036] Figure 2 Shows Figure 1 a schematic structural diagram of the loop car.

[0037] Figure 3 Shows Figure 1 a schematic structural diagram of the deviation correction device.

[0038] Figure 4 Shows Figure 3 a schematic structural diagram when the strip steel deviates towards the first end.

[0039] Figure 5 Shows Figure 3 The structural schematic diagram when the strip steel deviates towards the second end.

[0040] Figure 6 Shows the flowchart of the deviation correction method for the loop system.

[0041] Description of reference numerals: 10 - loop system; 100 - loop carriage, 110 - loop car body, 121 - first deflector roll, 122 - second deflector roll, 123 - third deflector roll, 130 - deviation correction device, 131 - first deviation correction device, 132 - second deviation correction device, 133 - third deviation correction device, 134 - deviation correction roll, 135 - sliding platform, 136 - driving member, 141 - first detection device, 142 - second detection device, 143 - third detection device, 150 - control device, 160 - wheel, 161 - power supply busbar, 162 - power receiving device, 163 - lead wire; 164 - track, a - first layer of strip steel, b - second layer of strip steel, c - third layer of strip steel, d - fourth layer of strip steel, e - fifth layer of strip steel, f - sixth layer of strip steel; 200 - conveying device, 210 - first conveying roll, 220 - second conveying roll, 230 - third conveying roll, 240 - fourth conveying roll, 250 - idler device, 300 - strip steel. Detailed implementation manners

[0042] In order to enable those skilled in the art in the technical field to which the present application pertains to more clearly understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0043] In the prior art, for large-scale pickling production lines, generally, a relatively high demand for the strip steel storage capacity is required, sometimes reaching more than 800 meters, and the horizontal physical travel of the loop carriage can reach 100 meters, or even 200 meters. During actual production, according to the prior art, multiple sets of fixed deviation correction devices installed on the ground, as the carriage continuously moves away, and due to the isolation effect of the intermediate idlers in the loop, the above devices cannot effectively and timely correct the deviation of the strip steel at one end of the carriage, and the deviation amount of the strip steel cannot be obtained, so the deviation problem cannot be detected in time. The unit continues to run at high speed, and problems such as high-speed deviation and rubbing often occur, resulting in strip breakage and shutdown failures, and at the same time causing damage to the equipment in the loop, resulting in relatively large losses. Therefore, the present application provides a loop carriage, a loop system and a deviation correction method for strip steel to solve the above technical problems.

[0044] Please refer to Figure 1 , Figure 2 ,Figure 3 , Figure 4 and Figure 5 As shown in Figure 3 , Figure 4 and Figure 5 , in the embodiment of the first aspect of the present application, a loop trolley 100 is provided, which includes a loop trolley body 110, a steering roller, a deviation rectifying device 130, a detection device and a control device 150. The steering roller is arranged on the loop trolley body 110 and is used for steering the strip steel conveyed to the loop trolley 100. The deviation rectifying device 130 is arranged on the loop trolley body 110. Along the moving direction of the strip steel, the deviation rectifying device 130 is located upstream of the steering roller to rectify the strip steel entering the loop trolley body 110. The detection device is arranged on the loop trolley body 110. Along the moving direction of the strip steel, the detection device is located upstream of the deviation rectifying device 130. The control device 150 is connected to both the detection device and the deviation rectifying device 130.

[0045] Therefore, during the movement of the strip steel, when the strip steel moves near the steering roller, there may be a situation where the strip steel deviates from the normal track. The detection device can be used to obtain in advance whether the strip steel deviates from the moving track, and then the deviation rectifying device 130 can be used to rectify it in time to ensure the stability of the strip steel movement. The present application realizes the functions of strip steel deviation detection and deviation correction on a high-speed moving loop trolley.

[0046] The loop trolley body 110 can store or release the strip steel. The deviation rectifying device 130 is arranged on the loop trolley body 110. For example, it can be arranged at a position close to the edge of the strip steel, parallel to the strip steel plane, and at a certain safe distance from the strip steel. By installing sensors on the loop trolley body 110 to detect the position information of the strip steel edge, the position information of the strip steel edge can be detected at any time.

[0047] The deviation rectifying device 130 is located upstream of the steering roller to rectify the strip steel entering the loop trolley body 110, that is, the information of the strip steel about to enter the steering roller can be obtained in advance. If the strip steel deviates, it can be rectified by the deviation rectifying device 130 to ensure that the position of the strip steel after being steered by the steering roller is corrected in time.

[0048] The control device 150 can, according to the information provided by the strip steel detection device, realize the real-time signal intertransmission between the on-vehicle equipment and the ground control center, rectify in time through the deviation rectifying device 130, and at the same time can comprehensively judge whether there is a risk of the strip steel scraping the edge, and control the unit to reduce speed or stop according to different risk levels.

[0049] In some embodiments, the number of steering rollers is N, the number of deviation rectifying devices 130 is N, and the number of detection devices is N, where N is a natural number and N≥1; the strip steel is transported to the loop body 110 for storage or release to form the first layer of strip steel a, the second layer of strip steel b... and the 2Nth layer of strip steel. In certain embodiments, N = 1, and at this time, the number of strip steel layers of the loop body 110 is 2 layers. In some other embodiments, N = 2, and at this time, the number of strip steel layers of the loop body 110 is 4 layers. In some other embodiments, N = 3, and the number of strip steel layers of the loop body 110 is 6 layers. In some other embodiments, N = 4, and at this time, the number of strip steel layers of the loop body 110 is 8 layers.

[0050] In some embodiments, the number of strip steel layers of the loop body 110 is 6 layers. The loop body 110 includes the loop body 110, 3 steering rollers, 3 deviation rectifying devices 130, 3 detection devices, and a control device 150. The 3 steering rollers are respectively a first steering roller 121, a second steering roller 122, and a third steering roller 123. The first steering roller 121, the second steering roller 122, and the third steering roller 123 are all arranged on the loop body 110, and the first steering roller 121, the second steering roller 122, and the third steering roller 123 are arranged at intervals in sequence along the moving direction of the strip steel; the 3 deviation rectifying devices 130 are respectively a first deviation rectifying device 131, a second deviation rectifying device 132, and a third deviation rectifying device 133, that is, the first deviation rectifying device 131 is located upstream of the first steering roller 121, the second deviation rectifying device 132 is located upstream of the second steering roller 122, and the third deviation rectifying device 133 is located upstream of the third steering roller 123. That is, before the strip steel changes its moving direction through the first steering roller 121, the second steering roller 122, and the third steering roller 123, deviation rectification can be respectively performed through the first deviation rectifying device 131, the second deviation rectifying device 132, and the third deviation rectifying device 133 to ensure that the strip steel can be transported along a predetermined trajectory after changing its moving direction through the first steering roller 121, the second steering roller 122, and the third steering roller 123, and to ensure the stability of the strip steel transportation. The 3 detection devices are respectively a first detection device 141, a second detection device 142, and a third detection device 143. The first detection device 141 is located upstream of the first deviation rectifying device 131, the second detection device 142 is located upstream of the second deviation rectifying device 132, and the third detection device 143 is located upstream of the third deviation rectifying device 133. The strip steel can be advanced to obtain whether the strip steel deviates from its moving trajectory through the first detection device 141, the second detection device 142, and the third detection device 143, so as to perform deviation rectification in a timely manner through the first deviation rectifying device 131, the second deviation rectifying device 132, and the third deviation rectifying device 133, and to ensure the stability of the strip steel movement.

[0051] In some embodiments, the first detection device 141, the second detection device 142, and the third detection device 143 may be detection sensors. That is, sensors for detecting the position of the strip edge may be installed at a position on the loop car body 110 that is close to the strip edge, parallel to the strip plane, and at a certain safe distance from the strip, so as to detect the position information of the strip edge in real time.

[0052] In some embodiments, the number of strip layers on the loop car body 110 is 6, which are respectively denoted as the first-layer strip a, the second-layer strip b, the third-layer strip c, the fourth-layer strip d, the fifth-layer strip e, and the sixth-layer strip f.

[0053] In some embodiments, the deviation rectifying device 130 includes a sliding platform 135, a deviation rectifying roller 134, and a driving member 136. One end of the deviation rectifying roller 134 is rotatably connected to the loop car body 110 through a bearing seat, and the other end is disposed on the sliding platform 135; the driving member 136 is disposed on the loop car body 110, and the output end of the driving member 136 acts on the other end of the deviation rectifying roller 134 to drive the deviation rectifying roller 134 to move along the sliding platform to rectify the strip. That is, the driving member 136 can drive the other end of the deviation rectifying roller 134 to move along the sliding platform 135, so as to rectify the strip.

[0054] In some embodiments, the deviation rectifying roller 134 is slidably connected to the sliding platform 135; that is, a sliding groove adapted to the deviation rectifying roller 134 is provided on the sliding platform 135, and during the process of the driving member 136 driving the deviation rectifying roller 134 to start, the stability of the deviation rectifying roller 134 moving on the sliding platform 135 is ensured.

[0055] In some embodiments, the sliding groove of the sliding platform 135 is arc-shaped, the output end of the driving member 136 acts on the deviation rectifying roller 134, the output end of the driving member 136 is rotatably connected to the other end of the deviation rectifying roller 134, a bearing seat is provided at the other end of the deviation rectifying roller 134, and the output end of the driving member 136 is rotatably connected to the bearing seat at the other end of the deviation rectifying roller 134. The bearing seat at the end of the deviation rectifying roller 134 away from the driving member is rotatably connected to the loop car body. The driving member 136 can drive the deviation rectifying roller 134 to move along the direction of strip movement or in the opposite direction of strip movement, and at the same time, the deviation rectifying roller 134 swings at a certain angle when starting, which can more flexibly adapt to the strip deviation and perform more accurate deviation rectification.

[0056] In some embodiments, the driving member 136 may be an electric telescopic rod or a hydraulic telescopic cylinder, as long as it can drive the horizontal movement of the deviation rectifying roller 134, and this application does not make special restrictions.

[0057] In some embodiments, a track 164 is provided on the ground, wheels 160 are provided at the bottom of the loop car 100, the wheels 160 cooperate with the track 164, and the loop car 100 reciprocates on the track 164 to store the tension of the strip.

[0058] In some embodiments, the control device 150 is provided at the top of the loop vehicle body 110 and can reciprocate with the loop vehicle body 110. A power supply bus 161 is arranged in a direction parallel to the movement of the strip steel above the loop vehicle body 110, that is, the power supply bus 161 is horizontally arranged. The power supply bus 161 is responsible for uniformly supplying electric energy to on-vehicle electrical equipment such as the control device 150. The power supply bus 161 is also provided with a power receiving device 162. The power receiving device 162 can slide along the bus bar 30 and is connected to the control device 150 through a lead wire 163 to provide electric energy to the on-vehicle equipment at all times. Provide power supply for the on-vehicle actuator and the control device 150 to ensure the normal operation of the equipment.

[0059] Therefore, a small steering roller that can slide horizontally along the strip steel movement direction within a certain stroke on one side of the loop trolley is installed, and at the same time, the roller is driven by a driving member to move along the strip steel movement direction or the opposite direction within a certain stroke on one side, so as to realize the correction of the strip steel deviation direction and deviation amount. At the same time, a strip steel position detection sensor is installed on the loop trolley frame before the strip steel enters these small steering rollers to obtain the deviation direction and deviation amount of the strip steel in the direction along the roller surface in real time.

[0060] In the second aspect of the present application, a loop system 10 is provided, including the above-mentioned loop vehicle body 110 and a conveying device 200. The conveying device 200 is used to convey the strip steel to the loop vehicle body 110 for storage or release.

[0061] In some embodiments, the conveying device 200 is arranged at an interval from the loop vehicle body 110. The conveying device 200 is provided with an inlet end for the strip steel to enter the loop vehicle body 110 and an outlet end for the strip steel to lead out of the loop trolley 100. Taking the loop vehicle body 110 that can pass through six layers of strip steel as an example, the conveying device 200 includes a first conveying roller 210, a second conveying roller 220, a third conveying roller 230, and a fourth conveying roller 240. The first conveying roller 210 can adopt an existing deviation correction member, that is, the first conveying roller 210, the second conveying roller 220, the third conveying roller 230, and the fourth conveying roller 240 all have the function of deviation correction. The first conveying roller 210, the second conveying roller 220, the third conveying roller 230, and the fourth conveying roller 240 can adopt an existing deviation correction mechanism, and the present application does not make special restrictions. In some embodiments, the strip steel enters from the third conveying roller 230 and then is led out through the first conveying roller 210.

[0062] In practical applications, the deviation rectifying member only has a good effect on rectifying the strip steel behind the conveying device 200, that is, the fourth conveying roller 240 plays a role in rectifying the first-layer strip steel a, the third conveying roller 230 plays a role in rectifying the third-layer strip steel c, and the second conveying roller 220 plays a role in rectifying the fifth-layer strip steel e. That is, the prior art basically has no rectifying effect on the three layers of strip steel, namely the second-layer strip steel b, the fourth-layer strip steel d, and the sixth-layer strip steel f. The present invention solves the rectifying problems of the above-mentioned second-layer strip steel b, fourth-layer strip steel d, and sixth-layer strip steel f by arranging a deviation rectifying system on the loop car 100 moving at high speed.

[0063] As Figure 1 shown, at the positions before the second-layer strip steel b, the fourth-layer strip steel d, and the sixth-layer strip steel f enter the car turning roller, that is, at the end sections of the three layers of strip steel, position detection sensors for detecting the strip steel offset are respectively installed. The strip steel center offset is obtained through the detection sensor, and the strip steel center offset signal is fed back to the control device 150. After being calculated by the program of the controller of the control device 150, the displacement amount that the roller needs to make is calculated, and a command is issued to drive the electric actuator to act, and finally act on the first deviation rectifying device 131, the second deviation rectifying device 132, and the third deviation rectifying device 133 correspondingly, so that the corresponding deviation rectifying rollers 134 generate an inclination angle to play a role in adjusting the position of the strip steel. The first deviation rectifying device 131, the second deviation rectifying device 132, and the third deviation rectifying device 133 respectively act on the strip steel behind them. Along the moving direction of the strip steel, that is, the first deviation rectifying device 131 plays a role in rectifying the strip steel behind the first deviation rectifying device 131 and the second-layer strip steel b, the second deviation rectifying device 132 plays a role in rectifying the strip steel behind the second deviation rectifying device 132 and the fourth-layer strip steel d, and the third deviation rectifying device 133 plays a role in rectifying the strip steel behind the third deviation rectifying device 133 and the sixth-layer strip steel f.

[0064] In some embodiments, the loop system 10 further includes a supporting roller device 250 provided between the turning roller and the conveying device 200. In some embodiments, the loop car 100 is further provided with a plurality of supporting roller devices 250 provided between the first deviation rectifying device 131 and the first turning roller 121, and the supporting roller device 250 is used to abut against the strip steel. That is, it can play a role in supporting the strip steel to prevent the strip steel from sagging. When the loop car body 110 passes through, the supporting roller device 250 can be opened or closed without affecting the walking of the loop car body 110. In some embodiments, a supporting roller device 250 is arranged at a position where each layer of strip steel is spaced 8 - 16 meters apart, that is, the supporting roller device 250 can be arranged at intervals of 8 meters, 10 meters, 12 meters, 14 meters, or 16 meters.

[0065] Thus, the loop system 10 of the present application can achieve layer-by-layer differential adjustment, improving the effect of strip deviation rectification in the loop. Especially for a large-travel loop, it can effectively suppress the problem of layer-by-layer deviation of the strip, where the deviation directions of each layer are different, caused by strip shape factors and the action of evenly distributed strip rollers in the loop. The deviation rectification function on the loop vehicle body 110 and the fixed deviation rectification device of the conveying device 200 on the ground act simultaneously at both ends of the horizontally tensioned strip, which can better ensure the centering effect of the strip throughout the whole stroke.

[0066] In the third aspect of the present application, a method for rectifying the deviation of a loop system 10 is provided, including the following steps:

[0067] S100: Obtain the strip center offset of the strip based on the detection device;

[0068] According to the obtained position information of the strip edge at one end of the loop vehicle body 110, determine whether the strip deviates from the center position, and calculate the center offset value. In this embodiment, as Figure 1 shown, the first detection device 141, the second detection device 142, and the third detection device 143 are installed on the loop trolley 100 and move reciprocally with the loop vehicle body 110 to detect the strip center offset at one end of the loop vehicle body 110 at all times.

[0069] Obtaining the strip center offset of the strip based on the detection device specifically includes: The distance between the strip edge at the driving end of the deviation rectification device 130 and the initial strip center line of the deviation rectification device 130 is denoted as A. Here, the initial strip center line can be understood as the position of the center line of the strip after it is wound around the deviation rectification roller 134 when the strip does not deviate along the strip running direction. The distance between the strip edge on the other side and the initial strip center line of the deviation rectification roller 134 is denoted as B. Then the strip center offset C = (A - B) / 2. If C is greater than 0, that is, the strip deviates towards the side of the driving end of the deviation rectification device 130 as Figure 5 shown. If C is less than 0, the strip deviates towards the side away from the driving end of the deviation rectification device 130 as Figure 4 shown.

[0070] S200: Control the start of the deviation rectification roller 134 based on the strip center offset of the strip to rectify the deviation of the strip.

[0071] Among them, controlling the start of the deviation rectification roller 134 based on the strip center offset of the strip specifically includes:

[0072] If the strip center offset is greater than the first threshold, control the driving member of the deviation rectification device 130 to move along the strip movement direction to rectify the deviation of the strip;

[0073] If the strip center offset is less than the first threshold, control the driving member of the deviation rectification device 130 to move along the opposite direction of the strip movement to rectify the deviation of the strip.

[0074] In step S200, according to the center offset of the strip steel and based on the PID calculation model, the driving member 136 is driven to extend or contract to adjust the tilt angle of the deviation rectifying roller 134. In this embodiment, as Figure 3 and Figure 4 shown, when the first detection device 141 detects that the strip steel deviates towards the first end, the deviation signal is sent to the control device 150, and the controller issues an action instruction to the driving member 136. The driving member 136 contracts, driving the second end of the deviation rectifying roller 134 to slide towards the driving member 136, that is, to slide in the opposite direction to the movement direction of the strip steel, generating an inclination angle, thereby achieving the purpose of correcting the deviation of the strip steel. As Figure 3 and Figure 5 shown, if the first detection device 141 detects that the strip steel deviates towards the second end, the control device 150 issues an opposite action instruction, the driving member 136 extends, driving the second side of the deviation rectifying roller 134 to slide away from the driving member 136, that is, to slide in the direction of the movement of the strip steel, so that the deviation rectifying roller 134 generates a reverse inclination angle, achieving the effect of correcting the deviation of the strip steel.

[0075] That is, according to the strip steel center offset data obtained by the detection device and based on the PID calculation model, a displacement adjustment signal for the deviation rectifying roller 134 is output to correct the position of the offset strip steel in a timely manner.

[0076] In some other embodiments, the adjustment method further includes:

[0077] Obtain the strip steel width dimension and the strip steel center offset, and determine whether the risk degree of the strip steel edge exceeding the roller edge is greater than the second threshold and less than the third threshold, then control the loop car body 110 to decelerate;

[0078] If the risk degree of the strip steel edge exceeding the roller edge is greater than the third threshold, then control the loop car body 110 to stop.

[0079] Based on the obtained current strip width information and the strip center offset, judge the risk level of the strip edge exceeding the roller edge, and control the speed reduction or stop of the unit according to different risk levels. In some embodiments, the width L of the roller surface is 1900 mm, the strip center offset is C, and the percentage of the actual travel of the vehicle-mounted deviation correction execution structure to its maximum travel is p, that is, the ratio of the actual elongation of the driving member 136 to the maximum elongation of the driving member 136 or the ratio of the actual contraction of the driving member 136 to the maximum contraction of the driving member 136. The relationship is shown in Table 1. When the speed reduction condition is met, the entry side and the exit side of the loop simultaneously drop to a crawling speed of 60 m / min to reduce the risk coefficient and avoid high-speed rubbing. When the limit threshold is met, the unit is directly triggered to stop to avoid a strip break accident. That is, the control device 150 comprehensively judges the scraping edge risk of the current strip according to the strip detection device and the strip width information, and controls the speed reduction or stop of the unit according to different risk levels. Table 1 Current strip width L (mm) Mill speed reduction threshold (mm) Mill stop threshold (mm) L＞1500 30 < C ≤ 80, p > 80% C＞80 1350＜L≤1500 40 < C ≤ 90, p > 80% C＞90 1200＜L≤1350 50 < C ≤ 100, p > 80% C＞100 1050＜L≤1200 60 < C ≤ 120, p > 80% C＞120 L≤1050 70 < C ≤ 150, p > 80% C＞150

[0080] In some embodiments, the present application can also be provided with a strip tracking unit for continuously tracking the width information, weld position, etc. of each strip in the current loop. For strips with different widths stored in the loop at the same time, the head position is continuously tracked to judge the risk level of the strip edge exceeding the roller edge.

[0081] The loop system 10 of the present application realizes the deviation correction effect for each layer of strip by installing a fixed conveying device 200 on the loop ground and installing a strip position detection device and a deviation correction device 130 on the continuously moving high-speed loop vehicle body 110. Especially for large-travel loops such as pickling lines, when the strip shape is not good, the deviation direction of each layer of strip is also different. The present invention solves the problems that the deviation amount of the strip at one end of the large-travel loop trolley 100 cannot be obtained and corrected, and then continuous deviation occurs, resulting in high-speed rubbing, strip breakage, and long-term downtime. For large pickling production lines, it not only realizes the effective detection of the strip deviation amount at the trolley end, provides an interlock protection function, solves the problem that the strip deviation cannot be detected in time, further causes high-speed edge rubbing and accident expansion, but also plays a continuous correction function for the deviation of large-capacity and trolley-end strips, avoiding the occurrence of downtime accidents.

[0082] The present application realizes the deviation correction effect for each layer of strip by installing a fixed deviation correction roller on the conveying device on the loop ground and installing a strip position detection and correction device on the continuously moving high-speed loop trolley. Especially for large-travel loops such as pickling lines, when the strip shape is not good, the deviation direction of each layer of strip is also different. The present invention solves the problems that the deviation amount of the strip at one end of the large-travel horizontal loop trolley cannot be obtained and corrected, and then continuous deviation occurs, resulting in high-speed rubbing, strip breakage, and long-term downtime.

[0083] In this application, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0084] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0085] In this application, unless otherwise clearly defined or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0086] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality" means two or more, unless otherwise clearly and specifically defined.

[0087] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and purpose of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. A loop trolley, characterized in that, Comprising: Looper car body; Steering rollers, arranged on the looper car body, for steering the strip steel conveyed to the looper trolley; Deviation rectifying device, arranged on the looper car body, along the moving direction of the strip steel, the deviation rectifying device is located upstream of the steering rollers to rectify the strip steel entering the looper car body; Detection device, arranged on the looper car body, along the moving direction of the strip steel, the detection device is located upstream of the deviation rectifying device; Control device, connected to both the detection device and the deviation rectifying device.

2. The loop trolley according to claim 1, wherein, The number of the steering rollers is N, the number of the deviation rectifying devices is N, and the number of the detection devices is N, where N is a natural number and N≥1; The strip steel is conveyed to the looper trolley for storage or release to form the first layer of strip steel, the second layer of strip steel... and the 2Nth layer of strip steel.

3. The loop car according to claim 1 or 2, characterized in that, The deviation rectifying device includes: Sliding platform, Deviation rectifying roller, one end is rotatably connected to the looper car body through a bearing block, and the other end is arranged on the sliding platform; Driving member, arranged on the looper car body, the output end of the driving member acts on the other end of the deviation rectifying roller to drive the deviation rectifying roller to move along the sliding platform to rectify the strip steel.

4. The loop trolley according to claim 3, wherein, The deviation rectifying roller is slidably connected to the sliding platform; And / or, the axial length of the deviation rectifying roller is greater than the moving distance of the deviation rectifying roller.

5. A loop system, characterized in that, Comprising: The looper trolley according to any one of claims 1-4; Conveying device, for conveying the strip steel to the looper car body for storage or release.

6. The loop system according to claim 5, characterized in that, The looper system further includes a supporting roller device arranged between the steering rollers and the conveying device.

7. A strip deviation rectification method for a loop system according to claim 5 or 6, characterized in that, Including the following steps: Obtaining the strip steel center offset of the strip steel based on the detection device; Controlling the deviation rectifying device to start based on the strip steel center offset of the strip steel to rectify the strip steel.

8. The strip deviation rectification method of the loop system according to claim 7, characterized in that, The obtaining the strip steel center offset of the strip steel based on the detection unit specifically includes: the distance between the strip steel edge at the driving end of the deviation rectifying device and the initial strip steel center line of the deviation rectifying device is denoted as A, and the distance between the strip steel edge on the other side and the strip steel initial center line is denoted as B, then the strip steel center offset C=(A - B) / 2.

9. The strip deviation rectification method of the loop system according to claim 7, characterized in that, The controlling the deviation rectifying device to start based on the strip steel center offset of the strip steel specifically includes: If the strip steel center offset is greater than the first threshold value, then controlling the driving member of the deviation rectifying device to move along the moving direction of the strip steel to rectify the strip steel; If the strip steel center offset is less than the first threshold value, then controlling the driving member of the deviation rectifying device to move along the opposite direction of the strip steel movement to rectify the strip steel.

10. The strip deviation rectifying method of the loop system according to any one of claims 7-9, characterized in that, The strip steel deviation rectifying method of the looper system further includes: Obtaining the strip steel width dimension, the strip steel center offset and the risk degree of the strip steel edge exceeding the roller edge; If the risk degree of the strip steel edge exceeding the roller edge is greater than the second threshold value and less than or equal to the third threshold value, then controlling the looper car body to decelerate; If the risk degree of the strip steel edge exceeding the roller edge is greater than the third threshold value, then controlling the looper car body to stop.

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